CVE-2021-40142

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.
Overview
  • CVE ID
  • CVE-2021-40142
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-27T07:15:08
  • Last Modified Date
  • 2022-09-03T03:54:54
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:opcfoundation:local_discover_server:*:*:*:*:*:*:*:* 1 OR 1.04.402.463
AND
cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:*:*:*:*:*:*:*:* 1 OR 2022
cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:2022:-:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_process_historian_opc_ua_server:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:siemens:simatic_net_pc:14:-:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_net_pc:15:-:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_net_pc:16:-:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_net_pc:17:-:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_wincc:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_wincc_runtime:-:*:*:*:professional:*:*:* 1 OR
cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:telecontrol_server_basic:3.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf Patch Vendor Advisory
https://opcfoundation.org/security-bulletins/ Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-40142
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40142
History
Created Old Value New Value Data Type Notes
2022-05-10 15:40:36 Added to TrackCVE
2022-12-05 09:11:15 2021-08-27T07:15Z 2021-08-27T07:15:08 CVE Published Date updated
2022-12-05 09:11:15 2022-09-03T03:54:54 CVE Modified Date updated
2022-12-05 09:11:15 Analyzed Vulnerability Status updated